"We Take Custom T-Shirt Printing Seriously" At Aaron's Designs, creating custom t-shirts is an art form. This is because we realize how powerful custom printed tshirts can be for your company, school, church or just about any organization. At Aaron's Designs, creating custom t-shirts is an art form. This is because we realize how powerful custom printed tshirts can be for your company, school, church or just about any organization. Custom printed tees can be used effectively for many purposes. Promote your business everywhere you go. Custom t-shirts are one of the most inexpensive ways you can promote your business in style. It is not too 'pushy' so as to annoy your clients yet you get the message across all the same.